The rise of misinformation on social media has had a significant impact on the U.S. vaccination roll-out in early 2022, according to a recent study byJennifer Allen, a postdoctoral researcher at the Computational Social Science Lab at the University of Pennsylvania. Allen’s talk at NYU Stern will highlight the findings of a working paper co authored with Duncan J. Watts and David Rand, which examined the effects of vaccine-related URLs on US Facebook users. The study analyzed 13,206 URLs, combining lab experiments, crowdsourcing, and machine learning to estimate the causal impact of these URLs on vaccination intentions among 233 million Facebook users (Jennifer Allen, 2023). The findings reveal that unflagged vaccine-related content, even if misleading, had a 46-fold greater impact on 用户’s vaccination intentions compared to misinformation before it was flagged by fact-checkers. However, Facebook users were exposed to only limited amounts of flagged content, and mainstream media stories highlighting rare deaths after vaccination, which were not flagged by fact-checkers, had a higher impact than misinformation. Allen emphasized the need to prioritize checking for more than just harmful content in addition to outright falsehoods. The study underscores the importance of detecting and mitigating misinformation in the social media landscape, as well as the limitations of existing methods in preventing worse decisions. Allen’s research interests in misinformation, political persuasion, and crowd-sourcing will provide valuable insights into how to improve public engagement in the face of rapidly evolving information. These findings suggest that Facebook users are becoming more exposed to false claims about vaccine efficacy and that the campaign is under significant pressure from its audience to deliver more compelling 和事实-Based content. Allen also noted that fact-checking efforts, which have been effective in preventing misinformation, are not as widely effective in preventing unverified or misinformation-filled content. She highlighted the need for a more comprehensive approach to identifying and combating both lies and misleading content in the digital era. Through this study, Allen hopes to inspire greater scrutiny and accountability in the realm of social media and public perception. The findings of this research emphasize the critical need for public and political stakeholders to uphold facts and build trust in the vaccine roll-out process. January 1, 2023.
